Search means the search bar up top. When it says they got somewhere from your listings, your shop, or your sections, that means they clicked around inside your shop.
So, if I search for mittens, and I see a pair of mittens you made, and I click on them, you have one visit from Search.
If I then click one of the previews of another item you sell, for example a hat, (either in the sidebar or the related items list at the bottom of a listing), the visit to that hat would be sourced from "your listings."
If from there I click to your shop's main page, that's a visit to your shop from your listing.
Then if I click to a scarf from there, that's a visit to your listing from your shop.
Total: 3 listing views, 1 shop view
Sources: 1 search, 2 listing, 1 shop
Did that make sense?